Wilhelm a



(No Model.)

W. A. GRONDAHL.

y APPARATUS FOR CARRYING VESSELS OVER OBSTRUGTIONS. No. 350,242.Patented Oct. 5, 1886.

l kw 612A: g gr m l BY Mom h ATTORNEYS.

WITNESSES @W JAM 1 NITED STATES ATENT FFICE.

WILHELM A. GRONDAHL, OF PORTLAND, OREGON.

SPECIFICATION forming part of Letters Patent No. 350.242, dated October5, 1886.

Application filed March 20, 1886. I

To all whom it may concern:

Be it known that I, WILHELM A. GRoN- DAHL, of Portland, in the county ofMultnomah and State of Oregon, have invented a new and Improved Methodof Carrying Vessels Over Obstructions, of which the following is a full,clear, and exact description.

My invention relates to an improved apparatus for transporting vesselsover obstructions, the object of theinvention being to carry vesselsover such obstructions as rapids and falls in rivers that wouldotherwise not be navigable, so that a continuous transport upon suchrivers is rendered possible; and to the end named the invention consistsof a properly-constructed way arranged in connection with vessels havingtrucks carrying wheels that are adapted to run upon said way. a propermotive power being arranged to advance the vessels over the way, as willbe hereinafter described.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sketch illustrating the general arrangement of theapparatus designed to carry out my improved method of transportingvessels. Fig. 2 is a cross-sectional view of the trestle illustrated inFig. 1, and designed as the way upon which the vessels are to move. Fig.3 illustrates the construction of one of the trucks carried by one ofthe vessels. Fig. 4 is a sectional view of a portion of a vessel,representing in detail the construction of the guard; and Fig. 5 is aninverted plan view of aportion of a scow or barge constructed inaccordance with the terms of my invention.

In carrying my invention into practice,I construct a steamboat, A, withwheels BB,

Serial No. 195,968. (No model.)

mounted on truck 0, arranged within a guardrail, D, of the vessel, thewheels B being designed to run upon rails E, carried by atrestle, F, orany other form of suitable foundation. The wheels B are, as stated,mounted within the line of the guards, the idea being to prevent allpossible injury to the wheels when the vessel is lying against a wharf.The motive power, when the vessel is running upon the rails E, isfurnished by the engine employed to propel the paddle-wheel, connect-ionbeing made with the shafts of the wheels B directly from thepaddle-wheel shaft, or indirectly through the medium of gearing orotherwise. Barges N, that are to be towed or transported by thesteamboat, are furnished with side trucks and guard-rails, such as thosedescribed in connection with the steamboat, the construction beingprecisely the same, except that the wheels of the barges are notdriving-wheels. In certain cases the barges might be towed over theobstruction by means of power applied from a stationary engine, or suchstationary engine might be employed to draw the steamboat, or to assistin such drawing.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

In transporting vessels, the combination, with a vessel, of truckscomprising timbers projecting from the sides of the vessel, to the outerends of which timbers are applied guardrails, and wheels suspended fromsaid timbers inside of said guard-rails, substantially as shown anddescribed, and for the purpose set forth.

WILHELM A. GRONDAHL. Witnesses:

F. D. KUETTNER, F. G. EWALD.

